Conbad dauwalteb



(No Model.)

0. DAUWALTER.

METALLIC S AM.

No. 361,349. PatentedAp'r. 19, 1887.

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UNITED STATES PATENT Fries.

CONRAD DAUWALTER, OF DEEP WATER, MISSOURI.

M ETALLIC SEAM.

SPECIFICATION forming part of Letters Patent No. 361,349 dated April 19,1887. Application filed December 10. 1886. Serial No. 221,226. (Nomodel.)

To all whom, it 12mg concern.-

Be it known that I, CONRAD DAUWALTER, acitizen of the United States,residing at Deep Water, in the county of Henry and State of Missouri,have invented a new and useful Improvement in Metallic Stitching-Linksand Implement for Applying the Same, ofwhich the following is aspecification.

My invention relates to an improved seam and method of sewing leather;and it consists of the peculiar construction of parts, and the novelsteps hereinafter fully described, and particularly pointed out in theclaims.

In the drawings, Figure 1 is a perspective view of my improved devicefor fastening the links to the leather. Fig. 2 is a similar view of oneof the links. 7' Fig. 3 is a perspective view illustrating the method ofmaking a seam with my improved metallic links. Fig. 4 is a verticallongitudinal sectional view taken on line at at of Fig. 3.

A represents a stitch-link, which is preferably made of metallic wire ofany desired material. One end of the said link is bent to form an eye,B, and the other end of the link is bent at right angles to form an arm,0.

D represents a pair of pinchers having a pair ofjaws or arms, 1* and F,which are fulcrumed on abolt or pin,G. The outer end of onejaw isprovided with a needle-point, H, and the opposite jaw has an opening, I,adapted to receive the said needle-point when the jaws are closed.

The operation of stitching two pieces of leather together is as follows:The meeting edges of the leather are overlapped and are inserted betweenthe jaws of the pinchers, and

the said jaws are then clamped together, thereby causing theneedle-point to make an opening through the meeting edges of theleather. The arm 0 of one of the links is then inserted in the saidopening, the main portion of the link being extended on the leather inthe direction of the proposed line of stitches or seams, and the leatheris then again inserted between the clampingjaws, with the eye of thelink directly over the opening I in the lower jaw of the pinchers. IVhenthe jaws are clamped together, the needle-point passes through the eyeof the link and the meeting edge of the leather, and at the same timeclinches the outer end of the arm 0011 the under side of the leather.The second link then has its arm 0 passed through the eye of the firstlink and through the opening in the lever, and the operation beforedescribed is then repeated, thereby causing the links to be unitedfirmlytogether and clinched on the leather. A suitable number of thesaid links are employed to extend the entire length of the proposedseam, and as the said links are connected together and are clinchedunder the leather, it will be readily understood that a seam of greatstrength and durability is thus made.

I do not wish to be limited to making the stitch-links of Wire, as I amaware that the same end may be attained by constructing the links ofsheet metal by stamping therefrom.

Having thus described my invention, I claim- 7 1. A seam having theedges of the material overlapping one another and a series ofinterlocking metallic links, A, passed through the lapped edges of thepieces and arranged lengthwise of the seam, thelinks being passedthrough eyes of adjacent links on one side of the material and clinchedon the opposite side, as set forth.

2. The method of uniting two pieces of leather,consisting, first, inlapping the opposing edges of the leather one over the other; second,inserting a series of interlocking eyelinks in openings made through thelapped edges of the leather and arranging the said links in a singlecontinuous-line along the line of the proposed seam and parallel withthe lapped edges of theleather, and, third, clinching the ends of thelinks on the reverse side of the leather, substantially as described.

3. The method herein described of uniting leather, consisting in passingone end of a metallic eye-link through the leather and simultaneouslyforming an aperture through the leather for the succeeding link andclinching the end of the preceding link against the opposite side of theleather, as and for the purpose described.

In testimony that I claim the foregoing as my own I have hereto affixedmy signature in presence of two witnesses.

CONRAD DAUIVAL'IER.

.. IVitnesses:

J. A. \VILLIAMS,

H; SEPAUER.

ICO

